/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.camunda.bpm.integrationtest.functional.transactions;

import org.junit.Assert;

import org.camunda.bpm.engine.impl.cfg.TransactionListener;
import org.camunda.bpm.engine.impl.cfg.TransactionState;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.integrationtest.util.AbstractFoxPlatformIntegrationTest;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.Test;
import org.junit.runner.RunWith;


/**
 * 
 * @author Daniel Meyer
 *
 */
@RunWith(Arquillian.class)
public class TransactionListenerTest extends AbstractFoxPlatformIntegrationTest {

  @Deployment
  public static WebArchive processArchive() {
    return initWebArchiveDeployment();
  }
  
  @Test
  public void testSynchronizationOnRollback() {
    
    final TestTransactionListener rolledBackListener = new TestTransactionListener();
    final TestTransactionListener committedListener = new TestTransactionListener();
    Assert.assertFalse(rolledBackListener.isInvoked());
    Assert.assertFalse(committedListener.isInvoked());
    
    try {
      
      processEngineConfiguration.getCommandExecutorTxRequired().execute(new Command<Void>() {
        
        public Void execute(CommandContext commandContext) {         
          commandContext.getTransactionContext().addTransactionListener(TransactionState.ROLLED_BACK, rolledBackListener);
          commandContext.getTransactionContext().addTransactionListener(TransactionState.COMMITTED, committedListener);  
          
          throw new RuntimeException("Booum! Rollback!");
        }
        
      });
      
    }catch(Exception e) {
      Assert.assertTrue(e.getMessage().contains("Rollback!"));
    }
    
    Assert.assertTrue(rolledBackListener.isInvoked());
    Assert.assertFalse(committedListener.isInvoked());
    
  }
  
  @Test
  public void testSynchronizationOnCommitted() {
    
    final TestTransactionListener rolledBackListener = new TestTransactionListener();
    final TestTransactionListener committedListener = new TestTransactionListener();
    
    Assert.assertFalse(rolledBackListener.isInvoked());
    Assert.assertFalse(committedListener.isInvoked());
    
    try {
      
      processEngineConfiguration.getCommandExecutorTxRequired().execute(new Command<Void>() {
        
        public Void execute(CommandContext commandContext) {         
          commandContext.getTransactionContext().addTransactionListener(TransactionState.ROLLED_BACK, rolledBackListener);
          commandContext.getTransactionContext().addTransactionListener(TransactionState.COMMITTED, committedListener);  
          return null;
        }
        
      });
      
    }catch(Exception e) {
      Assert.assertTrue(e.getMessage().contains("Rollback!"));
    }
    
    Assert.assertFalse(rolledBackListener.isInvoked());
    Assert.assertTrue(committedListener.isInvoked());
    
  }
  
  protected static class TestTransactionListener implements TransactionListener {

    protected volatile boolean invoked = false;
    
    public void execute(CommandContext commandContext) {
      invoked = true;
    }
    
    public boolean isInvoked() {
      return invoked;
    }
    
  }

}
